void f1(int a[])
{
    printf("%d\n",sizeof(a));
    a[4]=6;
}

main()
{
    int a[5]={1,2,3,4,5};
    int *ptr=(int*)(&a+1);
    printf("%d,%d\n",*(a+1),*(ptr-1));
    printf("%d,%d\n",sizeof(a),sizeof(&a));
    f1(a);
    printf("%d\n",a[4]);

    long* p;
    *p=234;


    int c[2];
    int * const d=c;
}
